Is T40.426 a billable code?
No. T40.426 is a header code that groups 3 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
T40.426: Underdosing of tramadol
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
T40.426 groups related diagnoses under underdosing of tramadol. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under T40.426
- T40.426AUnderdosing of tramadol, initial encounter
- T40.426DUnderdosing of tramadol, subsequent encounter
- T40.426SUnderdosing of tramadol, sequela
Other codes in T40.42 Poisoning by, adverse effect of and underdosing of tramadol
T40.426 questions
What does T40.426 mean?
T40.426 is the ICD-10-CM code for Underdosing of tramadol. It is in chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.